In other words, the size of Spaceship Earth (EPCOT Center) is 1 times 50 acre feet.

(a.k.a. EPCOT Center) (Walt Disney World Resort, Lake Buena Vista and Bay Lake, Florida) (total structure volume)Spaceship Earth, the iconic structure at the heart of Walt Disney World Resort's Epcot (formerly EPCOT Center), has a total volume of 50 acre feet. The outer structure of the sphere features a gutter system that channels all rainwater into nearby World Showcase Lagoon instead of simply falling off the surface of the sphere.

In other words, 50 acre feet is 0.71180 times the size of Royal Albert Hall, and the size of Royal Albert Hall is 1.4050 times that amount.

(a.k.a. Royal Albert Hall of Arts and Sciences) (Westminster, London, England, United Kingdom) (total auditorium volume)Royal Albert Hall measures 70.250 acre feet in total auditorium volume. One of the centerpieces of the Hall is the Grand Organ — the second-largest organ in the United Kingdom, with 10,268 speaking pipes reaching up to 9.8 m (32 ft) in height.

It's about one-and-seven-tenths times as big as The Capitol Rotunda (US).

In other words, the size of The Capitol Rotunda (US) is 0.590 times 50 acre feet.

(formally United States Capitol rotunda) (Washington, D. C.) (total chamber volume)The Capitol rotunda measures 30 acre feet in total volume. Beneath the Capitol lies a crypt that was built to hold the remains of President George Washington, but according to his wishes, Washington was entered at his family home and the crypt remains empty.

In other words, the size of The Goodyear Blimp is 0.0935 times 50 acre feet.

(for GZ-20A) The Goodyear GZ-20 model Blimp measures 4.650 acre feet in total volume. A December, 1929 college football game between the University of Florida Gators and the University of Oregon Webfoots (later the University of Oregon Ducks) began with the blimp dropping a parachute-equipped ball from a height of 61 m (200 ft) to the field below.

In other words, the size of an Olympic Swimming Pool is 0.04 times 50 acre feet.

(FINA regulation; (minimum capacity)According to the Fédération Internationale de Natation (FINA), a swimming pool for Olympic and world championship events must measure 50 m by 25 m with a depth of at least 2 m for a total volume of 2 acre feet. A pool of this size was to be used in Olympic time trials in New Jersey in early 2008, but its component pieces were stolen from a warehouse, likely to be sold for scrap metal.